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Keywords: acid
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Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference, June 8–9, 2021
Paper Number: SPE-201054-MS
... contrast, including the presence vacuolar layers called "hyperdrains". This paper describes the application of a novel acid system and the methodology successfully applied to effectively acid stimulate the Albian drain. The combination of long perforation intervals with lithology and permeability...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 27–29, 2018
Paper Number: SPE-191017-MS
... Abstract Acidizing treatments are the primary technique to enhance production of carbonate formations. Analysis of historical matrix treatment flowback, and laboratory assessment provide insights on the reservoir response to the acid recipe, and thus, positively enhance the selection of fluid...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, July 9–11, 2012
Paper Number: SPE-156398-MS
... Abstract The placement of multiple fractures in deep horizontal wells is more difficult than that in shallow formations due to HTHP conditions. This paper presents the latest advances in hydra-jet acid fracturing for solving problems in the process of deep well acid fracturing. Basic researches...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, November 1–3, 2010
Paper Number: SPE-133926-MS
... permeability. Acid and Diverter Selection The effectiveness of Hydrochloric Acid (HCl) in dissolving carbonates is well-known. However, repeated attempts to effectively remove the damage by pumping HCl bullhead often prove unsuccessful. These poor results are often caused by improper placement technique...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, November 13–15, 2006
Paper Number: SPE-103846-MS
..., and controlling the rate of removal of the filter cake to ensure uniform coverage of the whole interval. The cleaning solutions can be acids, enzymes, oxidizers, chelating agents, or combinations of these materials. Enzymes are only specific for biopolymers and will not attack the calcium carbonate particles...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology, September 11–13, 2000
Paper Number: SPE-62792-MS
... a screen run in a wellbore. Inlet and outlet samples were collected for size distribution analysis and removal efficiency calculations of each screen. Each plugged screen was then subjected to a cleanup method such as acidizing, use of enzyme breaker, backflow, or a combination of these methods. Following...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology, September 7–9, 1998
Paper Number: SPE-47772-MS
... emulsion, and back to the original invert emulsion using an acid-base chemical switch. The surfactants used in the reversible invert emulsion fluids are strong invert emulsifiers in the presence of lime. However, the same surfactants become regular emuisifiers in the presence of water-soluble acid...

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